博客的非空验证bug

public/javascripts/blog.js

@@ -34,7 +34,7 @@ function submit_article()
 function regexTopicDescription()
 {
     var name = message_content_editor.html();
-    if(name.length ==0)
+    if(message_content_editor.isEmpty())
     {
         $("#message_content_span").text("描述不能为空");
         $("#message_content_span").css('color','#ff0000');
@@ -55,7 +55,7 @@ function regexTopicDescription()
 
 function MessageReplayVevify() {
     var content = message_content_editor.html();//$.trim($("#message_content").val());
-    if (content.length == 0) {
+    if (message_content_editor.isEmpty()) {
         $("#message_content_span").text("回复不能为空");
         $("#message_content_span").css('color', '#ff0000');
         return  false;